Power Steering Pump GM vs. Mercruiser ?

[MikeM40]

My PS pump for my 1992 5.7 Mercruiser needs to be replaced.
It is stamped 196143521
Is there any Diff? besides the price in a Chevy & Mercruiser pump
Also can't I replace the pump & keep the reservoir or a rebuilt unit
TIA

[TilliamWe]

Just check the pulley, but I am fairly certain they are exactly the same. My father has switched them out before. And yes, he uses the old reservoir over, just changes the pump part.

[MikeM40]

Got it Cardone part # 20-860
kept the reservior & changed the pump
off to the boat
Thanks